Gas burner



`Iuly 22 1924.

J. B. ANDERSON GAS BURNER Filed Aug. 18. 1923 FIELIIII.

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l 5 www@ 5 2 MMM Patentecl July 22, 1924.

UNlTaD-"s`-1Ars PATENT orncajf JAMES B. ANnnnsoN, or snLALEn 'rowNsHIn ALLnsnzEN-Y coUN'rY, PENNSYLVANIA.

eAs BURNER.

p Application ined'August 1s, 1923. serial No. 658,026.

To all whom t may concern:

Be it known that I, JAMES B. ANDERSON, residing at ShalerTownshi ,-in the county of Allegheny and State of ennsylvania, a

.5 citizen of the United States, have invented or discovered certain new and useful 11n-- provements in Gas Burners, of which-improvements the following is a specification.

My invention relates to improvements in gas' burners, and particularly to the construction of the tips of the burners of blow torches, Asuch as are used for cutting steel and other metals. The 4tip of a blow-torch ,A burner embodying my invention is illus- 15 trated in' the accompanying drawings.

Figure I is a 'view of vthe burner tip in side elevation, Figures II and III are views in longitudinal section; Figures IV and V are views in transverse sectlon; and Figure VI is a view in end elevation. In Figure II .the central body is shown in elevation,

whereas in Fig. III both the outer body or shell and the central bodyare shown in section. The

The burner consists essentially of a cen- "tral body 1, and a surrounding bodyA 2.

These bodies are of essentially cylindrical form and they telescope one within another,

as the drawings clearly show. Akey 3 may.

be provided so uniting them that as a` unit they may be screwed to place. Both bodies .are tapered to one end, the right-hand end, as shown in Figs. I, II, and III. The inner body 1 is provided with two sets of longitudinally Aextending grooves.

grooves 4 extends through the truly cylindrical portion of the body 1 and somewhat farther and into 4the tapered portion, 'and the other set of grooves 5i extends along the tapered portion of the body 1 from the extreme end thereof. It will be observed on comparing Figures IV and VI that there is no necessary correspondence in number between the two sets of grooves. In the instance here shown there are five of grooves 4, and one of them is obstructed by the key l3, whereas there are six of the grooves'. It is, however, necessary that there be in,- tercommunication between the .grooves of the two sets. As here shown, both sets of planefofsection of Figs. II- 25 and III is indicated at II-'II, Fi VI. The

One set of.

grooves meet in and merge in an ope-n spacei 6, and there communication is effected. vThe open space 6 is formed by diminishing the diameter of', th'e entire body 1 to .approximately the diameter at the bottoms" of the grooves, ,thus eliminating the grooves in that portion of the body structure. .It

should further be remarked vof the structure of the inner body 1 that the truly cylindrical portion of it which is surrounded and enveloped in the truly cylindrical xportion of the sleeve body 2, is greater in dlameter rthan the adjacent portion to the left, and

that the grooves 4 which lare sunk in this part of the body portion l are sunk to such depth as to be flush with the cylindrical surface 'of the left-hand portion of this body Jmember. Tins the gas has continuous passage from the space on the left, through the grooves 4, to the spvace 6 within the burner structure, and thence through the grooves to the exit end, the right-hand end as shown in the drawings.

The body portion 1 is axially perforated 'from end to end with perforation 7.

In service it is the= passageways formed by and between the grooves and the enveloping body which are the passageways for the gaseous fuel, and it is the axial passageway which is the passageway for the blast of oxygen. vThe blast of oxygen affords the blow-torch function. The gaseous fuel advancing through the passageways formed by the grooves 4 and 5 is already mixed with air in sullicient quantities, that on emergence at the right-hand end 0f the burner tip, a light being 'there applied, the mixture burns in the air in a rosette of hot llames. When, the said rosette of ames being already lit, oxygen under high pressure is allowed to traverse the axial bore 7 combustion is intensified and a cone of flame of intense heating power and of oxidizing nature is powerfully projected from the burner tip.

The structure as thus far explalned is known to the art. My invention concerns particularly thegrooves '5 formed in the right-hand end of the body portion 1 ofthe burner, and in the sha e ofthe passageways which are constituted y and between these grooves and the adjacent portions of the enveloping body 2. These passageways as 'hitherto formed iare symmetrically arranged lround-bottomed,`l and of uniform section from end to end.

My invention is foundfirst in causing these grooves 5 to increase in depth 'as the point of exit is approached, and so to form flaring passageways. Furthermore,I the iiare4 is inward, the passageways widen axially. Associated with this modification, I form the grooves rectangular in crosssection, rather than round-bottomed. This rectangular shape is shown in Fig. VI, while the Haring is best shown in Fig. III.

My. burner, so improved in structure, I

y have developed particularly in the burning ofbtane gas, and with the end in view of obtaining with butane a flame well suited to such needs as the cutting of steel. Bu-

l tane is a gas from which under combustion large heat values may be derived, but the problem has been to release them eifectively. By forming the passageways of theburner tip of rectangular cross-section, and by deepening the grooves gradually to the exit and so forming flaring passageways, and, speciiically, axially flaring passageways, Ifindthat I can get unprecedented results.

The procedure in the use of-these torches is, first, to allow the -fuel gas in proper mixture to with a flame under which thev work is initially heated. When such initial' heating I .has been accomplished the blast of oxygen is turned on and vthe blow-torch eiiect is brought about. A long and 'intensely hot during the ensuing cutting step, the blast of oxygen entralns and consumes lthe fuel gas with highly intensified efl'ect.

I do not limit myself either to particular dimensions or to particular proportions. The drawings show a burner o my invention drawn to a scale somewhat larger than life-size. For illustration merely I give the actual dimensions' of the grooves and pasn sageways in a burner-torch tip which I have flow through the tip and to burn sageway and with Aa plurality of made andhave successfully used. The six -grooves which in the accompan ing drawin bear the reference numera 5 are one thlrty-seco-nd of an inch wide. They increase in depth from one thirty-second to one-sixteenth of an inch. The axial bore 7 for the oxygen blast is three sixty-fourths of an inch in diameter. With a burner tip having passageways of these dimensions and using butane, under a pressure of two pounds, I obtain a heating flame threeeighths of an inch lon and of great heating effect, and then, w en. I apply oxygen under a pressure of thirty pounds, I obtain a blow-plpe flame of intense cutting power three inches long.

I am' not in the practice of my invention' limited to the use of butane. I mention butanebecause it is a gas of high heating value upon which I have worked, to make it eii'ective for the end in view. Other gases, and particularly other hydrocarbon gases may be'used to advantage in my improved blow torch.

I claim as my invention:

1. In a blow-torch burner structure a burner body provided with an oxygen pae- .sageway and with a lurality of gas fpassageways concentrical y arranged about the axis of the said oxygen passageway and converging toward their exit, said gas passageways individually flaring to their exit. 2.1 In a blow-torch burner structure a burner body provided with an oxygen pasgs passageways concentrically arranged ut the axis of the said oxygen passageway and converging toward their exit, the said gas passageways individually Haring toward the axis as they approach their exit.n

3. In\ a blow-torch burner structure a burner body. provided'with an oxygen passageway and with a plurality of as passagewa s symmetrically arranged a out the axisv o the 'said oxygen passageway, said gas passageways individually being of rectangular cross-section and exit.

In testimony whereof I have hereunto set my hand.

. JAMES BANDERSON.

Witnesses :v

BAYARD H. CHRISTY,

PERGY A. EGLISH.

flaring to their 

